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VJ2000
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USER MANUAL
Rev. 4.0 - 26/02/01
8.6 Calibration of Plate Voltage Measurement (PLATE)
WARNING
:
Pay attention during this adjustement because are present dangerous voltages;
for this adjustement always use grounding
1)
The unit should must be switched off, perform SETUP 6.
2)
Switch the Heater/Plate Voltage meter switch (7 Fig.1) to the Plate position.
3)
Connect a dummy load (e.g. P>2KW/50 Ohm) to the RF Output of the amplifier.
4)
Before to switch on the External Multimeter verify that the multimeter selector is on VAC
position.
5)
Connect a multimeter equiped with probe for high tension measuring, to the common
terminal between R3 and C2, and to E contact on the High Tension Card.
6)
Switch on the tube amplifier.
7)
Adjust R3 trimmer of the Plate voltage measure Card to obtain the same measurement
both on the Voltage Measure Meter (6 Fig.1) placed on the front panel and on External
Multimeter.
8.7 Calibration of the PWR Meter (FWD-PWR LECTURE)
Perform SETUP 7.
1)
Connect a 50 Ohm 2KW dummy load in series with a bypass wattmeter (Byrd model
43), switch on the amplifier and verify the correct reading of the VJ2000s meter.
2)
Adjust trimmer R9, situated inside the directional coupler on the output of the low-pass
filter, near the antenna connector.
3)
To gain access, remove the small protection cover.
N.B. The trimmer R2 connected in series with the meter allows small adjustments
after the calibration of PWR, REF and FWD, and is normally in a central position.
SETUP 7
Summary of Contents for VJ2000
Page 1: ...Prodotto da Italia VJ2000 User Manual...
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Page 21: ...VJ2000 15 44 USER MANUAL Rev 4 0 26 02 01 FIG 1...
Page 23: ...VJ2000 17 44 USER MANUAL Rev 4 0 26 02 01 FIG 2...
Page 25: ...VJ2000 19 44 USER MANUAL Rev 4 0 26 02 01 FOTO 1 3 1 2 5 7 11 9 4 6 8 12 10...
Page 27: ...VJ2000 21 44 USER MANUAL Rev 4 0 26 02 01 FOTO 2 1 2 3 6 5 4...
Page 29: ...VJ2000 23 44 USER MANUAL Rev 4 0 26 02 01 FOTO 3 10 11 8 3 9 1 2 7 6 5 4...
Page 43: ...VJ2000 37 44 USER MANUAL Rev 4 0 26 02 01 SETUP 3 FIG 3...
Page 44: ...VJ2000 38 44 USER MANUAL Rev 4 0 26 02 01 SETUP 4 FIG 4...
Page 45: ...VJ2000 39 44 USER MANUAL Rev 4 0 26 02 01 SETUP 5 FIG 5...
Page 46: ...VJ2000 40 44 USER MANUAL Rev 4 0 26 02 01 SETUP 6 FIG 6...
Page 51: ...VJ2000 Flat Cable 1 2 Appendice Tecnica Rev 1 0 26 02 01...
Page 53: ...VJ2000 Telemetry Cable 1 2 Appendice Tecnica Rev 1 1 26 02 01...
Page 55: ...VJ2000 Power Supply 1 ph 1 6 Appendice Tecnica Rev 1 0 26 02 01...
Page 56: ...VJ2000 2 6 Power Supply 1 ph Technical Appendix Rev 1 0 26 02 01...
Page 61: ...VJ2000 H T R Card 1 phase 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 62: ...VJ2000 2 4 H T R Card 1 phase Technical Appendix Rev 1 0 26 02 01...
Page 65: ...VJ2000 R F Block 1 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 69: ...VJ2000 Power Supply 3 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 70: ...VJ2000 2 4 Power Supply 3 ph Technical Appendix Rev 1 0 26 02 01...
Page 73: ...VJ2000 H T R Card 3 phase 1 2 Appendice Tecnica Rev 1 0 26 02 01...
Page 75: ...VJ2000 R F Block 3 ph 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 80: ...VJ2000 2 4 Alarms Card Technical Appendix Rev 1 0 26 02 01...
Page 84: ...VJ2000 2 4 Gride Plate Meter Technical Appendix Rev 1 0 26 02 01...
Page 88: ...VJ2000 2 4 H V M Voltmeter Technical Appendix Rev 1 0 26 02 01...
Page 92: ...VJ2000 2 4 Plate V M Card Technical Appendix Rev 1 0 26 02 01...
Page 96: ...VJ2000 2 4 Low Pass Filter Technical Appendix Rev 1 0 26 02 01...
Page 99: ...VJ2000 Input Matching Circuit 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 100: ...VJ2000 2 4 Input Matching Circuit Technical Appendix Rev 1 0 26 02 01...
Page 104: ...VJ2000 2 4 Directional Coupler Technical Appendix Rev 1 0 26 02 01...
Page 107: ...VJ2000 Telemetry Card opt 1 4 Appendice Tecnica Rev 1 0 26 02 01...
Page 108: ...VJ2000 2 4 Telemetry Card opt Technical Appendix Rev 1 0 26 02 01...